A line graph shows two lines reflecting the older age population (defined as 65 and over) as a ratio of the working age population (defined as 20 to 64) from 1950 to 2070. The line slowly rises to 23 and 20 until 1990 then rises more sharply to 37 and 31 in 2020. Projections show a sharper rise 51 and 53 in 2050 before rising more steadily to 64 in 2080.